Terrorism -- 254 Terrorism 100 Prevention 77 Islam 70 Politics and government -- 70 History -- 58 Religious aspects -- 58 more ... Politics and government 54 History 53 Foreign relations -- 48 Islam -- 44 Islam and politics -- 43 War on Terrorism, 2001-2009 41 National security -- 38 Prevention. -- 33 Terrorists -- 30 World politics -- 30 Prevention -- 29 Government policy -- 28 Jihad 27 Security, International 27 Islamic fundamentalism 25 Foreign relations 23 International relations 20 September 11 Terrorist Attacks, 2001 20 Military policy 19 Muslims -- 19 Psychological aspects 19 Islamic fundamentalism -- 17 Islam and politics 16 less ...